Manual BG41/BG42/BG43 List of figures
Rev. 99/49 A-1
Appendix
A Listoffigures
Fig. 1-1: Deliverable interface building blocks ................................................................................1-4
Fig. 2-1: Data transfer via interface ( Example Module BG41).......................................................2-1
Fig. 2-2: Front panel of building block BG41..................................................................................2-2
Fig. 2-3: Position of jumpers and DIL switches on BG41................................................................2-3
Fig. 2-4: Front panel of building block BG42..................................................................................2-4
Fig. 2-5: Position of Jumpers and DIL switches on BG42 ...............................................................2-5
Fig. 2-6: Front panel of building block BG43..................................................................................2-6
Fig. 2-7: Position of jumpers and DIL switches on BG43................................................................2-7
Fig. 2-8: Firmware block diagram BG43..........................................................................................2-9
Fig. 2-9: Firmware’s memory distribution........................................................................................2-9
Fig. 3-1: Structure of the 20mA current loop-moduls ......................................................................3-4
Fig. 3-2: Allocation of terminal pins when operating 20mA current loop modules.........................3-5
Fig. 3-3: Characteristic curves of the current sources in relation to the applied voltage..................3-6
Fig. 3-4: An active 20mA current loop interface..............................................................................3-7
Fig. 3-5: A passive 20mA current loop interface..............................................................................3-8
Fig. 3-6: The structure of the RS232C modules...............................................................................3-9
Fig. 3-7: Allocation of terminal pins when operating RS232C modules..........................................3-9
Fig. 3-8: RS232C interface : connection with a RTS/CTS handshake...........................................3-10
Fig. 3-9: RS232C interface: connection without a handshake........................................................3-11
Fig. 3-10: Structure of a 20mA current loop/RS232C combination module..................................3-12
Fig. 3-11: Allocation of terminal pins when using a 20mA Current Loop Module ......................3-13
Fig. 3-12: Allocation of terminal pins when using a RS232C-module .........................................3-13
Fig. 3-13: Structure of the RS422/RS485 module..........................................................................3-14
Fig. 3-14: Allocation of terminal pins when using a RS422/RS485-moduls ................................3-15
Fig. 3-15: Point to point connection with a RS422/RS485-module...............................................3-16
Fig. 3-16: Two-wire connection with a RS422/RS485 module .....................................................3-17
Fig. 3-17: Multidrop connection with a RS422/RS485 module.....................................................3-18
Fig. 3-18: Four-wire connection with a RS422/RS485 module .....................................................3-19
Fig. 3-19: Structure of RS422P and RS485P modules...................................................................3-20
Fig. 3-20: Allocation of terminal pins when using RS422P and RS485P modules ......................3-21
Fig. 3-21: Two-wire bus connection...............................................................................................3-21
Fig. 3-22: Structure of the CENTRONICS module........................................................................3-22
Fig. 3-23: Allocation of terminal pins when using a CENTRONICS module ..............................3-23
Fig. 3-24: Point-to-point connection when using a CENTRONICS module .................................3-23
Fig. 3-25: Structure of an SSI module ............................................................................................3-24
Fig. 3-26: Data flow........................................................................................................................3-25
Fig. 3-27: Allocation of the terminal pins when using an SSI module...........................................3-26